Friction-gear press



H. STOMMEL.-

FmcUoN GEAR Pnfs. Y APPLICATION FILED SEPT.3| |918.

Patented Feb. 1,1921.

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APPLICATION FILED SEPT. 3. 1918- 1,366,970. Patented Feb.1,1921;

3 SHEETS-SHEET- 3- UNITED STATES" 'PATENT OFFICE.

HUGO sroivnviEL, or ELBERON, NEW JEnsEY, Assrenoe or ONE-HALF To AUGUST smeer, OE rnEfrE; AMBOY, NEW JERSEY.

-FRICTION-GEAR PRESS.

i Specification of Letters Patent.

Patented Feb. 1, 1921.

Applicationled September 3, 1918.` Serial No. 252,288.

To allwtom Muay concern.' Be it known thatl, HUGO STOMMEI., actizen of the United. States ,residing in Elberon, county of Monmouth, andv State ot New Jersey, have invented `a certain nevi. and useful Friction-Gear Press,` ci' which the following` is a specification.,

vlleretoiore it has been comnioirto` make manually driven presses for floor and Wall tiles7 embossing or punching metal'. paper."4 leather, etc., wherein the finished product has to be pushed out of the die by-1neans of a manually actuated apparatus. The ob-4 ject of this invention is to provide a power driven press, of4 the character in. question, which Will relieve the operatoinof the manual labor of operating the press, 'his laborbeing' conlined to shutting-the. power on and oil and inserting;` and removing'- `material from lthe press. v i f 1 This and other objects are accomplished by my invention, one embodiment ot' which is hereinafter more particularly. set forth.

For a more detailedl description Ot .my inf` vention, reference` islto be had to the ac` company-ing drawings7 forming a part hereot, in vvhich-- -1 S.

Figure. l is a side elevation ol. a. press provided with my` improvementl-;

Fig. @fis an endelevationnoii' the same with a driving pulley removed; Fig'. 3 is a sectional View tekenen the line 3-3 of Fig. l.. looking inthedirection of the arrOWs;\-except.-that certain-.minor part-sare omitted;v l i .1 f5 1 Fig. 4 is a sidelelevation partially in seotion taken substantially Onthe line Ot Fig. 8. locking in the direction oi' the arrows; and l i Y Figs. 5 andro show details ofjconstruction relating to' a clutch byvvh'ich the` eiectinr;4 mechanism thrown inandl-ont ot) action.

My improved mech.finis/n1-` ap'plied Lto an ordinary press l- Wh clthas rameZnnd] carries a screnT threadedportion 3 at-the top of `the., frame in which is-mmiuted a screw Vlpvvhichis attachedto aj suitable cross head that runsin any desired guide 6. allot which may be ofthe conventional. or any other form desired. Thepressalso is provided with abcd v'7 which may carry-any mold, die or other device usedin the press, but as here shown a fixed die member-"77 Y i illustrated, and passing'throufrh the bedarev two parallel and screvvthreaded spindles S which mayl be attached to any particularV means ilor ejectiirigl the finished product of the mold in a manner which will` be de scribed below. As shown the spindles 8 support a movable die member 77.

The mold employed may be olf any Well known form but; ispreferably Oi. the character shown and described inmy co-pending'` application, Serial No. 288,166, filed April i', 1919L l The screw il at its upper ond is secured to a large wlieel which has a periphery composed Ott some friction material such as rubbeigavood, leather or similar substance andthis friction Wheel 9 is adapted to engagekeither, but not both simultaneously, ol?- tWO disks l0 and ll fixedly held on a rotaryy shaft l2 which runs in suitable bearings 13 rising` from brackets lll. which are lined to the irame 2. One end ot the shaft l2 has a small pulley 15 liXed thereon and beyond this is a second pulley 'i6 which carries a belt 17 by means oit which the press is driven.

'.lllie upward movement ofthe screivfl and Wheel 9 is limited by means ot" a leafspring` i8 which is lined to a bracket 19 Which` is secured to the rear of the part 3 of the frame 2 so that when the Wheel 9 engages Vthe spring 18, it is brought to a stopaudheld by frictional contact with this spring; until lowered in a subsequent.operation ot the apparatus.

Power is delivered to the Wheel 9 bymeans or` the disks l() and il, as above stated, and these dislrs are so spaced` that neither or one may be in contact with the Wheel 9. TWhen neither is in contact the ivlieelis idle. When one is in contact this Wheel runs accord ingly" and thescrcvv 41 is raised or lowered in the `nut 3 accfudinzg;` to the direction in which this Wheel 9 is driven. li' driven clockwise as one looks down upon it, it is lowered and ii driven anti-cloclrwise it is raised. fllndernormal conditions it is as sumed4 that theA disk l() drives the wheel 9 to compress whatever is in the mold or die 77 and the disk lll Works in the Opposite direction to `raise the cross head through the screw 4l. Whether either or neither of these disks shall Operate to drive the wheel 9` depends On the position oi?` the shaft l2which has a sliding; movement in the direction of its aXislWhich is caused by means of" a lever 20, fulcrumed at 2l in a suitable support that comes from a bracket 14 and its upper end is provided with a bifurcated portion 22 which receives the ears 23 which extend laterally from a suitable collar mounted so that the shaft 12 turns therein, but cannot move in the direction of its length with regard thereto. The lever 20 is a bent lever and at its lower end it is provided with a suitable pivotal connection 24 which in turn is pivoted to a link 25 that runs to al hand lever 26, fulcrumed at 27 and provided with a suitable dog 28 by means of which the lever 26 may be properly held in any of three positions. When in its mid position, the disks 10 and 11 are off the wheel 9. When in its raised position, the disk 11 engages the wheel 9, and when in its lowered position the disk 10 engages this wheel 9. In any event, the action of the disks on the wheel 9, if any, is determined by this lever 26.

lt is obvious from the foregoing that the cross head 5 is shifted or not shifted accord ing to the position of the hand lever 26 and it is understoodthat the shifting of this cross head either up or down determines whether or not pressure is applied to or removed from whatever is in the mold on which the press acts.v lWhen the molding operation has been completed, and it is desirable to eject the contents by actuating thc rods 8 this is done in a mechanism which will now be described.

The rods 8, at their lower ends, are held rby nuts or other suitable means in a bracket y 29 which spreads laterally from a suitable stem 30 which'moves in the direction of its length a slight distance in a suitable guide 31 fixed to the base 32 of the machine. Near its center, this stem 30 is recessed to receive .35 that also rise from the base 32 of the machine. F our of these bearings are employed although a greater or less number may be used, if so desired.

One end of the shaft 34 is provided with a crank arm 36 which is fixed thereto and provided with a suitable crank pin 37 which carries a block 38 which turns freely thereon and slides in a suitable guideway 39 in a link 40 which has two cap screws 41 mounted in suitable ears 42 by means of which the free movement of the block 38 in the slot 39 may be determined. The other end of the link 40 has a pivotal connection with a suitable crank pin 43 fixed away from the center of a small spur gear 44 which has a shaft 45 mounted in a suitable bearing 46 that rises from a base 47 of a clutch mechanism. The spur gear 44 meshes with a pinion 48 with half its diameter and with half its number of teeth. This pinion is mounted on a suitable shaft-49 which runs in a bearing 50 which rises from the base 47. The

shaft 49 carries a disk 51 which is adjacent thereto and fixed to the shaft 49 and a housing 52 which carries a spring pressed boli- 53 which is kept in place by a cover plate 54 that is held by suitable screws, or other securing means, and shifted by means of a depending tail 55 which is adapted to ride on a cam 56 which may be mounted in any suitable way as on a link 57 which is sup ported near each end by means of suitable links 58 which rise from the base 47 and are pivoted thereto in any suitable manner. The link 57 is normally kept so that the cam 56 will engage the tail 55 because of a coil spring 59 which is connected to the link 57 and also to an upright 60 which rises from the base 47 and is fixed thereto in any suitable manner. This link 57 may be pulled against the tension of the spring 59 so that: the cam 56 will be clear of the tail 55 b v a mechanism which will be described below. When this cam 56 is clear of this tail the spring of the bolt 53 will force it into a corresponding recess of a disk 61 mounted on a suitable shaft 62 to which it is fixed and on the same shaft is also fixed a pulle)v wheel 63 which is in line with the pulley l5 and driven therefrom by means of a suitable belt 64. The shaft 62 is supported by a suitable bearing 65 that rises from the base 47. It

will be understood from the foregoing that when the machine is in operation the pulle)v 63 is driven continuously by the belt 64 and that the shaft 49 is driven only when the bolt 53 is in the groove in the disk 6l. This occurs when the cam 56 is withdrawn by a link 66 which is attached thereto and also to a crank arm 67 which is fixed to a shaft 6H that is journaled in suitable bearings 69 on the frame 2 of the machine and provided with a small crank arm 70 that is pivotally connected to a link 7l that runs to a hand lever 72 pivotally mounted on a bracket 7 s which extends from the frame 2 and adjacent t0 the lever 26 so that when the forward end of the handle of the lever 72 is raised. the link 71 is lowered and the link 66 is thrown to the' front of the machine and then the cam 56 is withdrawn against the tension of the spring 59 'as above described. As soon as the bolt 53 'is in engagement with the disk 61 this disk drives the disk 51 and immediately thereafter the handle 72 is released and then the spring 59 acts to bring the cam 56 back into the path of the tail 55 so that when the `disk 5l has made a complete revolution, the bolt 53 is withdrawn from the disk 61 and then the disk 51 ceases to move and remains at rest for the next operation of the machine. As the pinion 4S makes one complete revolution, the spur gear 44 which meshes with it makes one-half a revolution and this causes the link 40 to be shifted one-half of its throw and then come back to its point of rest which is at the mid llO position and this imparts a correspondingl oscillation to the crank and the shaft 34- Which is fixed thereto and this in turn imparts an elevating effect to the projection 33 and causes it to rise enough to lift the bracket 29 and raise the ejectors connected to the rods 8.

In view of the foregoing, the operation of my improved press will be readily understood. Assuming a suitable die or mold 77 is on the table 7 and the ejector or movable die member 7i" is lowered and power is appliedas indicated by the arrow at the right 2l, the handle 26 is lowered and then the disk 'l0 is brought against the wheel 9 and the cross-head 5 lowered until sufficient pressure is put on the mold. llhen the handie 26 is raised and the disk i() is removed from the wheel 9 and the disk 1l is brought in contact with it and then the cross head 5 is raised until the wheel 9 comes in close Contact with the leaf spring 18 which is its point of rest and then the lever 26 is thrown into its mid position so that both the disks l0 and ll are ofi' the wheel 9. The handle of the lever 72 is then raised and lowered, as above described, so that the ejecting rods 8 will operate to eject the product from the die or mold in the conventional manner and then the mold may be again filled and the cycle of operations above described may be indefinitely repeated;

`While I have shown and described one embodiment of my invention, it is obvious t that it is not restricted thereto, but is broad enough to cover all structures that come within the scope of the annexed claims.

Having thus fully described the invention, what I claim as new and desire to secure by Letters Patent, is

l. A tile press embodying fixed and movable die members, an operating stem associated with the movable die member, a rock shaft, an arm on the rock shaft for reciproeating the operating stem when the rock shaft is actuated, a crank arm fixed to the shaft, a connecting rod cooperating with said crank to permit of loss motion in the connection between the crank and the connecting rod whereby the crank arm may partake of idle movement during the compressing of the tile without effecting movenient of the connecting rod, and a prime mover operatively associated with the connecting rod for actuating the rock shaft and positively operating the movable die member.

Q. A tile press embodying fixed and movable die members, an operating' stem associated with the movable die member, a rock shaft, an arm on the rock shaft for reciprocating the operating stem when the rock shaft is actuated, a crank arm fixed to the shaft, a connecting rod operatively connected with the crank arm, but adapted to permit loss motion in such connection, whereby the movable die member may be depressed to permit of the compression of the tile, without effecting movement of the connecting rod, a prime mover, and manually operable 'clutch mechanism between the prime mover and the connecting rod for rendering the connecting rod responsive or-irresponsive to the operations of the prime mover.

3. A tile press embodying fixed and movable die members, an operating stem associated with the movable die member, a rock shaft, an arm on the rock shaft for reciprocatingthe operating stem when the rock shaft is actuated, a crank arm, fixed to the shaft, the connecting rod cooperating with said crank, a power driving shaft, a driven sha-ft, a counter-shaft geared to the driven shaft and provided with a crank for operating the connecting rod, and manually oper able clutch members between the driving and driven shafts for rendering the connecting rod responsive or irresponsive to the operations of the driving shaft.

i. A power press embodying a friction wheel for operating the press, said Wheel being mounted for simultaneous rotation and for movement longitudinally of the axis of its rotation, means for imparting rotation and longitudinal movement to the wheel and a plurality of the superimposed leaf springs adapted to be successively placed under compression through engagement with the wheel, for the purpose of bringing the wheel to rest at the terminus of its longitudinal travel.

ln testimony whereof I have signed my name to this specification.

HUGO 'STOMMEL 

